Sash balance and holder



2 Sheets-Sheet 1.

(No Model.)

um E D .u RH ED MN AA Lw am PL .A GQB H S A S No. 545,847. Patented sept. s, 1895.

Witnesses SASH BALANCE AND HOLDER.

. Patented Sept. 3, 1895.* 170.3.

Inventor',-

ivrrnn reina.1

encuen F.' CLAMER, on PHILADELPHIA, PENNSYLVANIA.

SASH BALANCE AN D HOLDER.

SPECIFICATION forming part of Letters Patent No. 545,847', dated September 3, 1895.

Application ined september 25,1894. sean no. 524,091. (No model.)

To rr/ZZ whom t may concern:

Be it known that I, GEORGE F. CLAMER, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain `Improvements in Sash Balances and Holders,

stood that the invention can be applied to any ordinary window without departing from my invention.

A car-window as generally made is not a balanced window, and has to be pushed up and held by catches, and the window-sashes. have to snugly fit the grooves in which theyv slide. Consequently the least swelling of the sash or the working ofthe car will cause the frame to bind upon'the sash.

By my invention I overbalance the sash, so that as soon as it is released it will have a tendency to rise, and I hold it at any point desired by friction which is sufficient to overcome the tendency to rise. I also provide a catch which automatically locks the window when it is closed.

In the accompanying drawings, Figure lis a sectional elevation of a car-window frame with the window-sash mounted therein. Fig. 2 is an enlarged view of a portion of the Window-sash, partly in section, to illustrate the working of the friction-plate.

Fig. 3 is a sectional plan view of the spring-box on the line 3 3, Fig. l. Fig. .iis an elevation on the line l 4, Fig. 3. Fig. 5 is asectional perspective View of the lock and friction-plate operating device. tive view of the adjustable holders for the tapes, and Fig. 7 is a section on the line 7 7, Fig. 2.

A is the frame of the window.

d is the head-bar, in which are mounted the adj ustableholders B B for the tapes c, which pass around wheels c', secured to the upper portion of the sash D. In the present instance these wheels c are mounted in bearings e e on a frame E, secured to the top of the window-sash. Centrally mounted on this frame is a spring-box E. Proj ecting from the frame E is a stud e', Fig. 3, on which is mounted the flanged disk e2, forming with the frame Fig. 6 is a detached perspec-` the spring-box Ei, and within this box isa spring E2, secured at e3 to the hub e4, its opposite end being secured to a pin e on the frame, near the outer portion of the springbox. The flanged portion of the disk e2 has a groove e6 for thereception of the tapes c o,

which are secured in any suitable manner to' the disk. The spring is wound to such an extent that it will overbalance the weight of the sash, and as soon as the sash is released the 'spring will have a tendency to turn the disk and wind the tapes thereon, causing the sash to rise. The spring can be set to any tensiondesired 'when the sash is adjusted to thewindow-frame inthe first instance, and if at any time the spring should become slack it can be readjusted with very little trouble by shortening the tapes c c.

InV order that the spring may pull evenly f upon both tapes and thus elevate the sash in a straight line, I secure the upper end of eachftape c to an adju-stable stud l), Fig. 6, which is adapted to a socket b', ears 'b2 on the stud being guided in slots h3 in the socket, A screw b4 passes through an opening in the upper portion of the socket and enters the threaded opening in the stud, so that by turning the screw the stud can be raised or lowered.

The lower portion h5 of the stud in the present instance has a series of slots, through which the end of the tape passes. The tape, bein g the ordinary metallic sash-tape, will be firmly secured to the stud by this means. If one tape should be a trifle longer than the other, one or other of the tapes can be adjusted by simply turning the screw so that an even tension will be placed upon both tapes, thus in suring the proper elevation of the window. At one side of the window there isa frictionplate F, which preferably extends the full length of the sash, although it may extend, in some instances, throughout only a portion of the sash. This plate is connected by links f to blocks F', secured in the sash, as clearly shown in Figs. 2 and 7. On the lower link is an arm f", forming a bell-crank lever, to

which is connected the operating-bar f 2, which in the direction of the arrow, Fig. 2, and thus tends to keep the friction-plate always against the groove in the frame. The lock in the present instance simply consists of a pivoted dog g, connected to the rodf2 at g', and has at its lower end an under-cut head g2, which engages when the sashl is down with an undercut head i' on a plate l, secured to the windowstill, as clearly shown in Figs. l and 5. An arm h on a lever H .acts upon an arm g3 of the dog g when the lever H is operated. For convenience, a projection h2 is formed on the lock-casing g directly above the lever H, so that by placing the thumb on this projection and the foreinger under the lever H and drawing them together the lever H will be moved in the direction of its arrow and will consequently move the dog in the direction of its arrow, thus releasing it from the head i, and the sash will be elevated by its spring; and, as soon as the lever H is released the friction-plate F, carried by the sash, will be thrown out against the window-frame, holding the window in a set position against the pressure of the spring.

I claim as my invention 1. The combination of the frame, the sash mounted therein, the frame E secured to the upper portion of the sash, said frame carrying a central spring box and side bearings, wheels c mounted in said side bearings, a stud on the frame, a llanged disk mounted on said stud, a spring within the flanged disk and secured thereto and to the frame, tapes c o secured to the periphery of the disk, and passing around wheels c c and secured to the upper portion of the window frame, substantially as described.

2. The combination of the window frame, the sash, the spring box attached to the upper portion of the sash, tapes extending from the spring box, adjustable holders'B mounted in the upper portion of the frame, each holder consisting of an adjustable stud b to which the tapes are secured, a socket b and an adjusting screw b4, substantially as described.

3. The combination of the window frame, the sash mounted therein, a spring tending to raise the sash, a friction plate F at one side of the window sash and connected thereto, a bell crank lever pivoted to the sash and connected to the friction plate, an operating bar also connected to said bell crank lever, and a spring for forcing the friction plate against the window frame, to resist the elevating I tendency of the lifting spring, substantially as described.

4. The combination of the window frame, the sash, the spring box mounted on the sash, tapes extending from the spring box to the upper portion of the window frame, a friction plate connected to the sasl1,abell crank lever pivoted to the sash and connected to the plate, a spring for forcing the friction plate against the frame, a locking dog, lever for operating the same, said locking dog being connected to the bell crank lever, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witness.

GEORGE F. CLAMER. Witnesses:

HENRY HoWsoN, WILL. A. BARR. 

